Inside Macintosh: QuickTime Components /

Chapter 6 - Sequence Grabber Channel Components / Sequence Grabber Channel Components Reference

Functions / Configuration Functions for Sound Channel Components

SGGetSoundInputDriver

The SGGetSoundInputDriver function allows the sequence grabber component to determine the sound input device currently in use by your sound channel component.

pascal long SGGetSoundInputDriver (SGChannel c);

c

Identifies the channel connection for this operation.

DESCRIPTION

The sequence grabber component may want to gain access to the sound input device if it wants to change the device's configuration. For example, the sequence grabber component may want to configure the device for stereo sound. If the sequence
grabber component changes any of the device's operating parameters, it informs your sequence grabber channel component by calling your SGSoundInputDriverChanged function, which is described in the next section.

The SGGetSoundInputDriver function returns a reference to the sound input device. If your sound channel is not using a sound input device, set the returned value to nil.

SEE ALSO

The sequence grabber component can assign a sound input device to a sound channel by calling the SGSetSoundInputDriver function, which is described in the previous section.

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